Guys Pls help me with this i dont understand anything :( 1) Approximate of gold = 19230kg/m³ = 19.1000kg/m³

2) I'm looking for the two points of the line mª= dª× Vª
   
3) Represents the straight line, choosing as the reference unit for:
- the abscissas 1000 (1 square of the notebook corresponds to 1000),
- the ordinates 1 (1 square of the notebook corresponds to 1);

So I can represent the points considering them O = (0,0) and
P = (1,19) because 19000= 19.1000